Container end cap



FIG. 1 is an frontal perspective view of a container end cap, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The surfaces or portions of the article not shown in the drawing or described in the specification form no part of the claimed design. 

The ornamental design for a container end cap, as shown. 